Telegraphy



May 12, 1925..

W. M. BRUCE, JR

TELEGRAPIHY Filed April 2S 1920 2 Sheets-Sheet l May 12, 1925.

W. M. BRUCE, JR

TELEGRAPHY Filed April 28, 1920 f 2 Sheets-Sheet 2 GMW() 3 and et and the back Contact on armature e and the said armature and through Wire G to ground. t

The circuit closers. Z1, b1, 152, b3, arev each connected to one end of the coil of each of the yrelays c, 01, c2, c3 by Wires 7, 8, 9 and 10, the

opposite ends of each of these relay coils being connected by the common Wire 11 to one sidev of the battery (l, the opposite side of y the Wires 8 and 1() respectively leading from the circuit closers to the relays 01 and c3 and the armatures @and e2 of these relaysare connected to the battery Wire-12 by Wires 15 and 16 so that when the armatures of relay c and c2 are pulled up they close the circuit through the relays c1 and c3 and cause these relays also to be operated as will hereinafter more fully appear. i

The forward contacts e and e7 of relays @l and` 03 are connected through resis-tance r1 and r2 te Wires 1 and 2 which lead toopposite sides of the main cable battery d1, and the back contacts e8 and e of relay c and 02 are connected by Wires 1T and 1S`to one side of the respective resistances r1 and r2 so that With the ivire 1, armature e, back contact as and Wire 17 a shunt is established around the resistance r1, and with Wire 2, armature c2, back contact el and Wire 18 a similar' shunt is established around the resistance r2.

liVith this explanation assumethat the circuit closer Zi is operated against the contact Zi* which will establish a circuit from the battery (Z thro-ugh wire 12, Contact 5*, circuit breaker wire 7 to relay c thence by the common battery return wire to the other side of the battery CZ. This will ener-A gize the relay o causing its armature e to move to the forvard contact @4 thus break` ing the shunt aro-und the resistance r1 at the contact es. As the armature c moves against the contact c4 a circuit is established from battery Z through Wires 12 and 15, arma-- ture c, contact e4, wire 13 to relay 01, thence relay @l and Wire 5, While the opposite side of the battery Will be connectedthrough Wire 1, armature e3 and Wire G to earth, thus sending a negative impulse into the cable. 'As soon as Athis circuit is broken at b4 by the operation of the circuit breaker Z) the armatures e and el will drop back to their back contacts,

earthing the cable through the circuit heretofore described. It' the circuit closer l' should be operated a circuit would be established through Wire 12, contact b5, eircuit breaker b1, wire'S to relay c1 and by the common battery Wire 11 to battery thus operating the relay 01. This will cause'the arma-ture el to contact with its forward contact e and inasmuch as the relay c in this case is not operated a circuit will be established from the conductor through Wire 5, arma-tureel, contact c6, Wire 17, back contact cs, armature e, Wire 1 to negative side of the battery While the positive side of the battery remains earthed. through the Wire 4L, armatru'e e3 and wire G. his results in another negativeimpulse being impressed upon the cable but inasmuch as the relay c has not been operated the resist-ance r1 Will be shunted and an impulse of `different potential but of the saine sign will be impressed upon the cable.

VIt the circuit breaker b2 should be operated circuits will be established from battery (Z through contact c", circuit closer b2, Wire S), relay c2, and battery Wire 11, thus operating the relay c2. This results in breaking the shunt for the resistance r2 at the contact e, establishing a circuit from the battery al through Wires 12 and 16, armature e2, for ward contact e5, wire 14 to relay c3 and by common battery u'ire 11 to the other side of the battery, hence both relays c2 and c3 are operated. The armature e2 of c2 breaks the shunt around the resistance r2 and the armature c3, contacting with the forward contact c?, places earth on the negative side of the battery Wire 6, armature e through re-r sistance r2 and Wire 2, While the positive side of the battery Will be connected through wire 3, armature c1 and wire 5 to the cable; thus a positive impulse is imparted to the cable through the resistance r2. Then the circuit breaker b3 is closed relay c3 Will be operated from battery Z through Wire 12, contact 57, circuit breaker b3, Wire and battery wire 11. In this case the relay 02 is not operated and the shunt around the resistance r2 is closed yat contact VS). The negative side of the batter however, will be connected to earth as before vthrough ivire 2, arma-ture c2, contact c, Wire 18, contact e7, armature e3, and Wire G to ground, While the positive side of the battery will be connected to the cable through Wire 3, armature e1 and Wire 5 as before; thus a positive impulse of higher potential will be imparted to thevcalble than when the resistance r2 is in circuit. Means are thus provided for sending into the cable 'impulsesof opposite polarity but of diiferent potential. ln Fig. 2 the means for translating these impulses is illustrated. The cable or conductor a provided with the usual receiving circuits has connected thereto a receiving;` relay f in tlienature of a' galvanomf eter having movable kcoil f1 connected by the Wires and j"3 across, the line in the usual manner. This movable. coil )"1 isprovided Witt, a mirror on Whiclrtliere is reliected a beam of light vfrom a .lamp

through suitablek lenses which lin turn is rei'leeted and normally Astands in a. neutral Zone mai-luid:v O between two. sets of sensitive elements such, as selenium s, S1, s2 and 83. Each oft these. elements is connected to the primary ot a :transformer 25,'t1, tgand 'the elements being connected by wire 2O to primary [L of the transormerl t. 81 is conn( ted by Wire 21 tothe primary Q71 of transiiornier t1, s? by wire 2 2, toy primary p2- oit' traus'tknaner and s? by Wire 23,v prin'iary p? et transformer llhe secondaries y, y1, 12/2 and f1/" oi? these respective transformers are cennected to. relays g, g1, g2 and 73 pr "Y ably et theniovable coil type. The movable coil ot each of the said relays is in circuit with 'the primary or' one ot the respective` transformers. Fer each transformer t', t1, /1 and t there `is provided a local relay 70 711, 751 and #and abattery (Z2, (Z3, Zt and (Z5. L- a ot relay g, is connected by Wire yfZ2 Yfrom `the other' side ozt the battery to, the. coil or relayr and thencev by wire 28 to the Contact h1. lThe tongue 7t1 ot' relay g1 is connected byavire 25 to battery f7, the other sident which is connected to relay 7:71 and by Wire` 29,;to Contact 72,5. The tenga-1e if of relay g2 isconnected by wire 2G to the battery 71, the other side et n-'hirh is com'iected through relay 7a2 and by wire 30 to Contact ZLG. rlhe tongue 71,3701? relay (/i is connected by nfirc 27 to battery 75, thence? through relayJ, and Wire 3l to contact 77, so that Whenever eitherv one of the relays g, g1, f/2, or g3 is operated the tongueV of said relay ycloses the .local circuit through a battery (Z2, (Z3, (Z1 or (Z5 and thus operates the corresponding;` relay 7c, 7:1, 702 or 7c3. i The arma-tures Z, Z1, Z2 and`Z3 are connected by the common Wire 32 and branches 33, 34 and B5 to a translating` device M which may be ot the ordinary recorder type, the opposite side being connected by Wire 36a to the center of a split battery C, the positive side ot' this battery being `connectedy byy Wire fill and the branch WireB' to the forward contacts Z and ZG ot relay 7:2 and 733 andthe negative side of the battery being connected by wire 3S and branch 39 to the forward con-` tacts ZT and ZS ot relays 73 and 701. The branch wires and leading` from the armatures Z1 and Z2 of relays 761 and 752 are provided withresistance r3 and r4, the result of which is that when the relay 7: is operated the contact and its armature Z7 closes a circuit through Wire 38, negative battery,

wire 36, recorder M, and Wire 32 to armature Z, thus operating` the relay or recorder M to its negative position `and causes 1t to move to a distance determined by tliiepotential o'lj' the battery. 1vVhenthe "re-lay 701 is y r1" which causestlie recorder to move inthe same direction but `with a less potential and consequently to a less degree because of the resistance r. '.lhe same result willoccnr `wluxn the relays 712 or 753 are operated `with the exception that the operation of the re.-l la-y 7'," will close the circuit contact Z5 rthi-engl; Wire 3G and positive battery 36W-to recorder M and through, resistance fr* and f branch Slto. armature Z2r thus causingthc relay or recorder to move in the opposite direction but with a shortei-"i'novement by reason of the resistance r11. 'llhe operation i or `he relav 7'1 willl close a circuit from co-nf tact at 7" through branchavire 37, Wire 3G, positive battery, `wire 36a, recorder M, Wire branch 35., and armature Z3, thus operatins; the recorder in a positive direction but through a circuit without resistance and consequently to a movement determined by the battery potential.

llayinnv thus described; my` inyention, I claim l. ln a systemA of telegi-'aphi-ng, means 'for supplying to a conducto-r impulses ot' oppo site polarity ol' a given potential and separate means 'for supplyingto said conductor increased potential iii-phase with said impulses of opposite polarity in connection with a nioyable coil relay" at a receiving station adapted to move in opposite direction by the current reversals Aand close a ci-rcuit to one set olf translating devices in response to said reversals and move to a `greater distance vin either direction in response to the current impulse of increased potential and close another circuit to oper ate a different set of translating devices by the additional movement.

EZ. In a system of telegraphing, receiving` mechanism embodyinga plurality of sets of translating devices, and a relay adapted to move in either direction in response to current reversals of one potential vand to control circuits to operate one set of translating devices, and to move to a greater distance in resp-onse to current impulses ot increased potential and operate another set ot translating devices.'

` 3. ln a telegraph system, means for supplying,` current reversals of one potential, additional. means 'for supplying increased potentialin phase with the current reverllO Cil

movement of said relay in response to the increased potential.

4. In a telegraph system, receiving meclianism embodying a plurality of translating devices, and a relay moving in either direction in response to current reversals of one potential and loperate one of said translating devices and to move to a greater distance in response to current impulses of an increased potential to operate another translating device, and a recorder controlled by said translating devices to record the movements of both of said translating devices.

5. In a telegraph system, a battery, means Jfor sending reversals of current from said battery to a conductor `through resistalice, separate means forshunting said resistance in phase With said reversals to increase the potential of said positive or nega tive impulses, and a receiving relay operated by said reversals of one potential tooperate one translating device and by said reversals of increased potential to operate a different translating device. G. In a telegraph systemiior high capacity lines, a receiving device moved in opposite directions by current impulses of opposite polarity of one potential and moved to a greater degree in each direction by current reversals of increased potential, a pluiality of elements operated by the dilerent movements of said receiving device, one set of elements operated Vby a limited movement of said receiving device in response to current reversals ol one potential and another set by the increased kmovement of said -receiving devicein response to reversals of ,y increased potential. f

7.' In a telegraph system for high capacity lines, a transmitter for sending current reversals through resistance to a conductor, means in said transmitter for sliunting said resistancein phase with said reversals to increase the potential of certain positive and negative impulses, and a movable'coil receiver lia-ving a plurality of circuit con` Certain reversals in phase therewith, a receiving deviceinoved to a limited extent in opposite directions by said current reversals of one 'potential and to a greater extent by reversals .of increased potential, separat-e translating devices in circuit with light eif- 'lected resistance elements, and means on said receiver to transmit light to said resistance elements to one set` by the limited movement of said receiver, and to another .set by the increased movement of said receiver, and thus 4operate the diferent trans- 'r latmg devicesone in response to reversals of one potential and the other in response to reversals of increased potential. n

In testimony whereof, I have hereunto -s'et my hand this 23rd day of April, 1920.

IVILLIAM M. BRUCE, Jn.

lVitness: i Giras 

